YUSUFALI: On that account: We ordained for the Children of Israel that if any one slew a person - unless it be for murder or for spreading mischief in the land - it would be as if he slew the whole people: and if any one saved a life, it would be as if he saved the life of the whole people. Then although there came to them Our messengers with clear signs, yet, even after that, many of them continued to commit excesses in the land.
This is one of the examples that shows that Muhammad was influenced by Jews.
This analogy that If you kill one Person it counts like you kill all the people on Earth is Not from the Bible,But From Mishnah(http://en.wikipedia.org/wiki/Mishnah), a Jewish Book was written 200 CE.
The Mishna say(Sanhedrin 4: 5):
For this reason, man [i.e. the first human being] was created alone to teach that whoever destroys a single life is as though he had destroyed an entire universe, and whoever saves a single life is as if he had saved an entire universe.
Pay attention to the style of Quran which is similar to Mishna Style:
On that account... Vs For this reason...
If we take the translation diffrances it sound the same...
So Muhammad heard this Mishna from the Jews and Entered it to the Quran!!!